/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package com.antgroup.geaflow.kubernetes.operator.web.controller.api;

import com.antgroup.geaflow.kubernetes.operator.core.job.GeaflowJobApiService;
import com.antgroup.geaflow.kubernetes.operator.core.model.customresource.GeaflowJob;
import com.antgroup.geaflow.kubernetes.operator.core.model.job.JobState;
import com.antgroup.geaflow.kubernetes.operator.core.model.view.ClusterOverview;
import com.antgroup.geaflow.kubernetes.operator.core.util.CommonUtil;
import com.antgroup.geaflow.kubernetes.operator.core.util.KubernetesUtil;
import com.antgroup.geaflow.kubernetes.operator.web.api.ApiResponse;
import io.fabric8.kubernetes.client.KubernetesClient;
import java.util.Collection;
import java.util.Map;
import java.util.stream.Collectors;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RequestMapping("/overview")
@RestController
public class OverviewController {

    @Autowired
    private GeaflowJobApiService geaflowJobApiService;

    @GetMapping
    public ApiResponse<ClusterOverview> getOverview() {
        ClusterOverview overview = new ClusterOverview();
        KubernetesClient client = KubernetesUtil.getKubernetesClient();
        overview.setHost(CommonUtil.getHostName());
        overview.setNamespace(client.getNamespace());
        overview.setMasterUrl(client.getConfiguration().getMasterUrl());

        Collection<GeaflowJob> jobList = geaflowJobApiService.queryJobs();
        overview.setTotalJobNum(jobList.size());
        Map<JobState, Long> jobStateNumMap =
            jobList.stream().filter(job -> job.getStatus().getState() != null).collect(Collectors.groupingBy(job -> job.getStatus().getState(),
            Collectors.counting()));
        overview.setJobStateNumMap(jobStateNumMap);
        return ApiResponse.success(overview);
    }

}
